CVE-2021-27944
CVE-2021-27944 is a critical-severity vulnerability in Vizio P65-f1 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 10.0
- EPSS exploit prediction: 4% (88th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-78
- Affected product: Vizio P65-f1 Firmware
- Published:
- Last modified:
Description
Several high privileged APIs on the Vizio P65-F1 6.0.31.4-2 and E50x-E1 10.0.31.4-2 Smart TVs do not enforce access controls, allowing an unauthenticated threat actor to access privileged functionality, leading to OS command execution. The specific attack methodology is a file upload.
Frequently asked questions
- What is CVE-2021-27944?
- Several high privileged APIs on the Vizio P65-F1 6.0.31.4-2 and E50x-E1 10.0.31.4-2 Smart TVs do not enforce access controls, allowing an unauthenticated threat actor to access privileged functionality, leading to OS command execution. The specific attack methodology is a file upload.
- How severe is CVE-2021-27944?
- CVE-2021-27944 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-27944 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-27944?
- CVE-2021-27944 primarily affects Vizio P65-f1 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-27944?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2021-27944 published?
- CVE-2021-27944 was published on 2021-08-26 and last updated on 2026-06-17.
References
- https://www.l9group.com/advisories/vizio-tv-unauthenticated-remote-code-execution
- https://www.vizio.com
Affected products (2)
- cpe:2.3:o:vizio:p65-f1_firmware:6.0.31.4-2:*:*:*:*:*:*:*
- cpe:2.3:o:vizio:e50x-e1_firmware:10.0.31.4-2:*:*:*:*:*:*:*
More vulnerabilities in Vizio P65-f1 Firmware
- CVE-2021-27943 — High (CVSS 7.5): The pairing procedure used by the Vizio P65-F1 6.0.31.4-2 and E50x-E1 10.0.31.4-2 Smart TVs and mobile application is…
- CVE-2021-27942 — Medium (CVSS 6.8): Vizio P65-F1 6.0.31.4-2 and E50x-E1 10.0.31.4-2 Smart TVs allow a threat actor to execute arbitrary code from a USB…
All CVEs affecting Vizio P65-f1 Firmware →
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